Arachosia

Arachosia, properly the Satrapy of Arachosia, was a client state of the Seleucid Empire, founded when Alexander the Great conquered the Persian Empire in 330 BC. Arachosia was an enemy of the Mauryan Empire when Chandragupta fought the Seleucids over Gandhara, and was later conquered by the Parthian Empire, successors to the Persians.